So I'm trying to rule out a math component to this word puzzle. If I could figure out the mechanism for turning the number strings into letters to use in the crossword puzzle, I could figure out the rest. Just stuck on how to get the number strings to represent words? I did notice that there isn't a "1" at all.
72436464037362406284362843628424260743773037333742
26666603862846609673
74908960749
22688
7732378
6463833606463890646304252284209275673
6224428353426
26479